Red Bull boss slams Renault again

Renault have once again been in the firing line from Red Bull Team Principal Christian Horner.

The Austrian Grand Prix was an important weekend for the four-time Formula One World Champions.

The team and driver Sebastian Vettel have dominated F1 in recent years and the return to newly named Red Bull Ring after an eleven year absence was probably planned as a form of celebration.

But there was to be no on track celebrations this weekend for Red Bull Racing.

Canadian Grand Prix winner Daniel Ricciardo could only manage an 8th place finish, whilst Vettel retired with reliability issues.

The German suffered a loss of power during the opening lap of the race which for a moment saw him stop on the side of the track. He curiously managed to get going again but realistically his race was already over at this point.

It was the latest in a whole host of mechanic issues that have plagued both Renault and Red Bull all season.

?It?s been frustrating; we have had another issue today, But at the end of the day we have won four World Championships with Renault, we have won all our races with them. We?ve got to trust them to get on top of these issues.

?There have been too many, but they?re more than aware of that.? Horner told Sky Sports.

Earlier on in the weekend Red Bull Racing motorsport advisor Helmut Marko had revealed to Sky that the team could consider making their own engines from 2016.

Despite sticking with Renault for next season, no deal has been agreed going beyond 2015 and with Red Bull unlikely to want to be a customer of the likes of rivals Mercedes and Ferrari an option could be to become a fully fledged manufacturer.

?It?s not something we want to do, We?re chassis designers and producers, we?re not engine manufacturers or designers and it?s not a key part of Red Bull?s philosophy, But we want to be competitive, we want to run at the front and Renault need to sort their issues out, they need to get on top of it. They need to change something in order that this doesn?t go forward.?